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MEMORANDUM
To: John Harrington
Association of Central Oklahoma Governments (ACOG)
From: Ken Senour, Guernsey
Philip Massirer and Kathryn McCoy, FTN
Date: February, 2013
RE: Revised Results, Projection Simulations, Canadian River Wasteload Allocation Study
NOTES:
1.0 INTRODUCTION
This memorandum documents the revised results for the projection simulations for the
Canadian River wasteload allocation (WLA) study. In these simulations, water quality is
predicted for critical conditions (i.e., design conditions) in accordance with regulations and
guidance from the Oklahoma Water Resources Board (OWRB) and the Oklahoma
Department of Environmental Quality (ODEQ). The purpose of projection simulations is to
determine effluent concentrations that will allow water quality standards to be maintained in
the streams.
Preliminary results were presented in a memorandum dated September 19, 2012. Those
simulations have been revised based on feedback from ODEQ, ACOG, and various other
members of the Canadian River Project Group (CRPG). This feedback included:
a) Written comments from ODEQ dated September 28, 2012 (ODEQ comments and
Guernsey/FTN responses are presented in Attachment A)
b) Verbal comments during the CRPG meeting on October 9, 2012 (meeting notes
written by Guernsey/FTN are presented in Attachment B)
c) Map showing proposed outfall locations for Oklahoma City and Moore to discharge
directly to the Canadian River (received via e-mail on October 17, 2012; shown in
Attachment C)
d) List of updated design flows received from ACOG via e-mail on December 31, 2012
(values are shown in Table 4).
e) Guidance regarding Minco and OG&E discharges received via e-mail from ODEQ on
January 7, 2013.
The most significant changes from the preliminary simulations in the September 19, 2012
memo are 1) the addition of multiple scenarios based on the possibility of several discharges
relocating from tributaries to the main stem of the Canadian River, and 2) further reductions
of effluent concentrations of BOD and ammonia as needed to allow all predicted dissolved
oxygen (DO) concentrations downstream of point source discharges to meet water quality
standards.

MEMORANDUM
To: John Harrington
Association of Central Oklahoma Governments (ACOG)
From: Ken Senour, Guernsey
Philip Massirer and Kathryn McCoy, FTN
Date: February, 2013
RE: Revised Results, Projection Simulations, Canadian River Wasteload Allocation Study
NOTES:
1.0 INTRODUCTION
This memorandum documents the revised results for the projection simulations for the
Canadian River wasteload allocation (WLA) study. In these simulations, water quality is
predicted for critical conditions (i.e., design conditions) in accordance with regulations and
guidance from the Oklahoma Water Resources Board (OWRB) and the Oklahoma
Department of Environmental Quality (ODEQ). The purpose of projection simulations is to
determine effluent concentrations that will allow water quality standards to be maintained in
the streams.
Preliminary results were presented in a memorandum dated September 19, 2012. Those
simulations have been revised based on feedback from ODEQ, ACOG, and various other
members of the Canadian River Project Group (CRPG). This feedback included:
a) Written comments from ODEQ dated September 28, 2012 (ODEQ comments and
Guernsey/FTN responses are presented in Attachment A)
b) Verbal comments during the CRPG meeting on October 9, 2012 (meeting notes
written by Guernsey/FTN are presented in Attachment B)
c) Map showing proposed outfall locations for Oklahoma City and Moore to discharge
directly to the Canadian River (received via e-mail on October 17, 2012; shown in
Attachment C)
d) List of updated design flows received from ACOG via e-mail on December 31, 2012
(values are shown in Table 4).
e) Guidance regarding Minco and OG&E discharges received via e-mail from ODEQ on
January 7, 2013.
The most significant changes from the preliminary simulations in the September 19, 2012
memo are 1) the addition of multiple scenarios based on the possibility of several discharges
relocating from tributaries to the main stem of the Canadian River, and 2) further reductions
of effluent concentrations of BOD and ammonia as needed to allow all predicted dissolved
oxygen (DO) concentrations downstream of point source discharges to meet water quality
standards.